Attachment for turning-lathes.



2 SHEETS-SHEET 1.

Patented July 2, 1912.

C. L. DICKERT.

ATTACHMENT PoR TURNING LATHBS.

APPLIOATION FILED SEPT. 15, 1911.

CDLUMBIA FLANUURPH co., WASHINGTON, DY C.

0. L. DIGKERT.

ATTACHMENT FOR TURNING LATHES.

APPLICATION FILED SEPT. 15, 1911.

Patented July 2, 1912.

2 SHEETS-SHEET 2.

COLUMBIA PLANMRAPH c0..WAsl-||Nu'roN. D.. c.

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CURTIS LEE DICKERT, OF MACONl GEORGIA. ASSIGNOR OF ONE-THIRD T0 CHARLESWILLIAM RICE AND ONE-THIRD TO WALTER CHAPMAN, OF MACON, GEORGIA.

ATTACHMENT FOR TURNING-LATI-IES.

To all whom t may concern Be it known thatl I, CURTIS LEE Drciiun'r, acitizen of the United States, residing at Macon, in the county of Bibband State of Georgia, have invented certain new and useful Improvementsin Attachments for Turning-Lathes; and I do delcare the following to beafull, clear, and exact description ot' the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to attachments for turning lathes.

One object of the invention is to provide an attachment for turninglathes whereby when the work will not swing clear of the lathe shearsthe tool may be revolved instead of the work.

Another object is to provide an attachment of this character adapted tobe applied to the lathe carriage in place of the. tool head and havingmeans to operatively connect the same with the driving mechanism of thelathe.

With these and other objects in view the invention consists of certainnovel features of construction, and the combination and arrangement ofparts as will be more fully described and claimed.

In the accompanying drawings: Figure 1 is a side view of a portion of amachine lathe showing the application of the invention; Fig. 2 is anenlarged vertical sectional view of the 'tool holding and revolvingmechanism of the attachment; Fig. 3 is an end view thereof; Figltis aside view of the rotary tool holding member of the attachment; Fig. 5 isan end view thereof with the parts broken away `and in section; Fig. 6is an end view of the face Vplate of the lathe showing the powertransmitting gear of the attachment secured thereto; Fig. 7 is a centrallongitudinal sectional view of the parts shown in Fig. 6; Fig. S is aside view partly in section of the pinion and sleeve of the powertransmitting shaft with which the power transmitting gear of theyattachment is operatively engaged; Fig. 9 is a similar view of thesleeve and pinion vide a supporting frame 1 comprising paral-Specficaton of Letters Patent.

Application led September 15, 1911.

Patented July 2, 1912.

Serial No. 649,585.

lel side plates 2 formed integral with a base plate 3. The plates 2 arerigidly braced at their side edges by integral bracing webs 4f asshown.. In the upper portion of the plates is formed the lower half of abearing 5 the upper half G of which is arranged on the upper ends of theplates and is securely fastened thereto by bolts 7 engaged with lugs 8formed on the edges of the plates as shown. The upper half or section 6of the bearing is preferably in the form of two semrcircular platesconnected together midway between their ends by an integral web 9, saidplates being also connected together at their ends by the lugs 8 asshown.

The frame 1 is adapted to be bolted or otherwise suitably secured to thecarriage 10 of the lathe and to take the place of the tool vhead usuallyattached to the carriage. In the lower portion of the side plates 2 ofthe frame are formed bearings 11 in which is revolubly mounted a sleeve12 having on its inner end an annular stop iange 13 adapted to engagethe end of the bearing while the opposite end of t-he sleeve is threadedexteriorly to receive an internally threaded retaining washer or nut lilwhich is screwed thereon and into engagement with the opposite end ofthe bearing as clearly shown in Fig. 2 of the drawings. On the sleeve,l2 is formed a centrally disposed spur gear pinion 15 which is adaptedto engage and operate the tool supporting mechanism hereinafterdescribed. Thel sleeve 12 has a keyed sliding engagement with a powertransmitting shaft 16 which is operatively supported at one end by saidsleeve and the frame l and has fixedly mounted on its opposite end asupporting and operating sleeve 17 which is revolubly supported in abearing bracket 18 secured to the frame of the lathe as shown. Thesleeve 17 has formed on one end a spur gear pinion 19 which when theshaft and sleeve are in place is disposed adjacent to the outer side ofthe bracket 18. The opposite end of the sleeve 17 is eXteriorly threadedand has screwed thereon an. interiorly threaded retaining washer 2Owhereby the shaft is heldin position and revolubly supported by thebracket 18.

Secured to the face plate 21 of the lathe byscrews of other suit-ablefastening means is a power transmitting gear 22 which is adapted toengage the pinion 19. By thus engaging the gear 22 with the pinion 19 onthe power transmitting shaft 16 the latter will be driven by the powerwhich operates the lathe as will be readily understood.

Revolubly mounted in the bearings formed in the side plates and uppersection of theframe 1 is atool supporting and operating membercomprising semi-cylindrical sections 23 and 24 having on their oppositeends segmental flanges 25 in which adjacent to their engaging ends areformed right angular notches 26, said notches forming lugs 27 on theends of the anges as shown. In the lugs 27 are formed screw holes, theholes of the lugs on the flanges of one section being threaded toreceive the clamping screws 28 by means of which the sections 23 and 24are securely fastened together. On the outer sides of the sect-ions 23and 24 midway between the flanges 25 are formed segmental series of spurgear teeth which, when the sections are clamped together form a gear 29with which thegpinion 15 on the sleeve 12 of the power trans-` mittingshaftisoperatively engaged to revolve said tool carrying member in itsbearings in the frame 1.

In the anges 25 on the, upper section 23 of the tool holding member areformed centrally disposed angular tool receiving slots 30 said slotsopening through the inner surface of the sect-ion 23 as shown clearly inFig. 2. lWith the slot 30 at either end of the section 23 is adapted tobe engaged the cutting tool or bitrl said tool being adjustablysecuredin the slots 30 by set screws 32 arranged in the outer ends ofthe section 23 as shown. By thus arranging and connecting the toolholding member it will be seen that the latter may be driven by thedriving mechanism of the lathe to bring the tool in operative engagementwith the work when the latter is of such nature as to prevent the samefrom being revolved by the lathe in the usual manner. By attaching thesupporting mechanism of the tool holding member to the lathe carriage inplace of the usual tool head, said supporting mechanism and the toolholder may be readily shifted back and forth across the lathe and willbe automatically fed byY the usual feeding mechanism of the carriage. Itwill be noted that the power transmitting shaft 16 is providedthroughout its length with a continuous key way thus permitting thesleeve of the power transmitting pinion 15 to operatively engage theshaft at any position to which the carriage may be shifted.

The attachment is primarily designed for the purpose of turning bearingson lift shafts but may be employed with any work for whichthe same issuited. In arranging the attachment the same is Secured to the carriageof the lathe in the manner described and the work is inserted throughthe tool holding and operating member of the attachment and is securedto the face plate and tail piece` of the lathe in the usual manner. Whenthus arranged the tool or bit is adjusted in the tool holding member tobring the edge of the bit into operative engagement with the work and ashereinbefore stated, said bit or Atool is fed along by the tool feedingmechanism which shifts the carriage to the lathe. Y

From the foregoing description taken in connection with the accompanyingdrawings, the construction and o-peration of the invention will bereadily understood without requiring a more extended explanation.`

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention as claimed.

Having thus described my invention, what I claim is: i

1. A tool holding and operating attachment for turning lathes comprisinga supporting frame adapted tobe secured to the carriage of the lathe, atool holding and operating member revolubly mounted in said framecomprising a tubular cylindrical body having retaining flanges forengagement with said frame, said flanges having obliquely disposed toolY receiving formed therein, means for securing tools in said slots, apower transmitting shaft geared to the driving mechanism of the lathe,and means to operatively connect said shaft withY said tool holding andoperating member whereby the latter is driven and the tool thusoperatively applied to the work.

2. A tool Asupporting and operating attachment for lathes comprising aVsupporting frame adapted to be secured to the carriage of therlathe, atool supporting member revolubly mounted in said frame, said membercomprising semi-cylindrical sections bolted together toform a tubularcylindrical body, retaining anges formed on the ends of said member andadapted to engage the outer sides of the frame, a spur gear arranged onsaid member midway between said flanges, means to secure a tool in theflanges of one of the sections of said member, a revolubly mounted powertransmittingshaft,'a pinionl slidably keyed t-o one end of said shaftand adapted to engage the gear on saidV tool holding member whereby thelatter is revolved by said shaft, and means to operatively connect theopposite end of the shaft with the driving mechanism of the lathe. s

3. A tool holding and operating attachment for lathes comprising asupporting frame adapted to be attached to the carriage of the lathe, atubular cylindrical tool holding and operating member revolubly s lotsVmounted in said frame, means to adjustably secure a tool or bit in saidmember, a gear arranged on said member, a revolubly mounted powertransmitting shaft, a sleeve slidably keyed to said shaft,apinion formedon said sleeve and adapted to engage the gear on said tool operatingmember, a. sleeve xedly mounted on one end of said shaft, a pinionformed on said sleeve, a power transmitting gear operatively engagedwith said pinion, and means to secure said gear to the face plate of thelathe.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

CURTIS LEE DIGKERT.

Vitnesses:

BEN BASHINSKI, J. B. RAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

